/**
 *
 *  Copyright (c) 2011, AstroDAbis
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without modification,
 *  are permitted provided that the following conditions are met:
 *
 *      * Redistributions of source code must retain the above copyright notice,
 *        this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above copyright notice,
 *        this list of conditions and the following disclaimer in the documentation
 *        and/or other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 *  OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 *  OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
package org.jiscinvolve.astrodabis.mallow.control.services;

import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;

import javax.validation.Valid;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.stereotype.Controller;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.context.request.WebRequest;

import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ModelAttribute;

import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional; 

import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
import org.springframework.validation.BindingResult;

import org.jiscinvolve.astrodabis.mallow.model.api.Account;
import org.jiscinvolve.astrodabis.mallow.model.tap.TapService;
import org.jiscinvolve.astrodabis.mallow.model.tap.TapServiceBean;
import org.jiscinvolve.astrodabis.mallow.model.jpa.DuplicateEntryException;

import org.jiscinvolve.astrodabis.mallow.control.ViewData;
import org.jiscinvolve.astrodabis.mallow.control.BaseController;
import org.jiscinvolve.astrodabis.mallow.control.NotFoundException;
import org.jiscinvolve.astrodabis.mallow.control.PermissionException;

/**
 * Create TapService controller.
 *
 */
@Controller
@RequestMapping("/services/create")
public class TapServiceCreateController
extends BaseController
    {

    /**
     * Our debug logger.
     * 
     */
    private static Log log = LogFactory.getLog(TapServiceCreateController.class);

    /**
     * The form view (JSP) path.
     * 
     */
    public static final String FORM_VIEW = "services/service-create" ;

    /**
     * The form data (bean) attribute name.
     * 
     */
    public static final String FORM_DATA = "bean" ;

    /**
     * Create the ViewData for this request.
     *
     */
    @ModelAttribute(ViewData.VIEW_DATA)
    public ViewData data(
        WebRequest request
        ){
        return new ViewData(
            request,
            this.actor(
                request
                )
            );
        }

    /**
     * Get the form.
     * 
     */
	@RequestMapping(method=RequestMethod.GET)
	public ModelAndView page(
	    @ModelAttribute(ViewData.VIEW_DATA) ViewData data,
	    ModelAndView model
	    ){
        Account actor  = data.actor();        
        log.debug("TapServiceCreateController.page(....)");
        log.debug(" Actor [" + ((actor != null) ? actor.ident() : null ) + "]");
        //
        // If we are not logged in.
        if (actor == null)
            {
            throw new PermissionException();
            }
        //
        // If we are logged in.
        else {
            model.addObject(
                FORM_DATA,
                new TapServiceBeanImpl()
                );
            model.setViewName(
    		    FORM_VIEW
                );
            }
        return model ;
        }

    /**
     * Post the form (save).
     * 
     */
	@RequestMapping(method=RequestMethod.POST, params="save")
	public ModelAndView save(
	    @ModelAttribute(FORM_DATA) @Valid TapServiceBeanImpl bean, BindingResult result,
	    @ModelAttribute(ViewData.VIEW_DATA) ViewData data,
	    ModelAndView model
	    ){
        return this.post(
            TapService.Action.SAVE,
            bean,
            result,
            data,
            model
            );
        }

    /**
     * Post the form (cancel).
     * 
     */
	@RequestMapping(method=RequestMethod.POST, params="cancel")
	public ModelAndView cancel(
	    @ModelAttribute(ViewData.VIEW_DATA) ViewData data,
	    ModelAndView model
	    ){
        log.debug("TapServiceCreateController.cancel(....)");
        //
        // Redirect to the home page.
		model.setViewName(
            data.redirect()
            );
        return model ;
        }

    /**
     * Post the form.
     * 
     */
	public ModelAndView post(
	    TapService.Action action,
	    TapServiceBean bean, BindingResult result,
	    ViewData data,
	    ModelAndView model
	    ){
        Account actor  = data.actor();        
        log.debug("TapServiceCreateController.post(....)");
        log.debug(" Actor  [" + ((actor != null) ? actor.ident() : null ) + "]");
        log.debug(" Action [" + action + "]");
        //
        // If we are not logged in.
        if (actor == null)
            {
            throw new PermissionException();
            }
        //
        // If we are logged in.
        else {
            //
            // If the input is not valid, re-display the form page.
		    if (result.hasErrors())
		        {
                log.debug("Input has errors");
                for(FieldError error : result.getFieldErrors())
                    {
                    log.debug("  Error [" + error.getObjectName() + "][" + error.getField() + "][" + error.getDefaultMessage() + "]");
                    }
        		model.setViewName(
                    FORM_VIEW
                    );
                return model ;
		        }
            //
            // If the input is valid.
            else {
                //
                // Try creating the new object and redirect to the details page.
                try {
                    TapService service = create(
                        action,
                        actor,
                        bean
                        );
            		model.setViewName(
                        data.redirect(
                            service
                            )
                        );
                    return model ;
                    }
                //
                // Anything goes wrong, add an error and re-display the form page.
                catch (Throwable ouch)
                    {
                    log.error("Exception while creating Query [" + ouch.getClass().getName() + "][" + ouch.getMessage() + "]");
                    result.addError(
                        new ObjectError(
                            FORM_DATA,
                            "Operation failed due to technical problems, please try again later"
                            )
                        );
            		model.setViewName(
                        FORM_VIEW
                        );
                    return model ;
                    }
                }
            }
        }

    /**
     * Create the TapService.
     *
     */
    @Transactional(readOnly=false, propagation=Propagation.REQUIRES_NEW)
    protected TapService create(TapService.Action action, Account actor, TapServiceBean bean)
        {
        return actor.services().create(
            action,
            bean
            );
        }
    }

